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b) If multiple crediting persists, increase spring tension
by moving
the
ratchet torsion spring (short end)
one
hole or
1/4
turn
clockwise to
the next
hole.
This
will slow the
ratchet
wheel and
decrease the prob-
ability of multiple crediting.
Finally, check springs
SP-IOO-120
(black) and
SP-IOO-113
(green)
to
make
sure
that they are not interchanged.
c)
If the credit unit does not return to zero, check the
adjustment of the switch stack just above the step-up
solenoid.
If the force exerted
by
the blades in this
stack
is excessive,
the credit
unit
will not return
to zero. Adjust the
stack
for a 1/32
11
gap when the
credit wheel is
not on zero, and a
.010
11
overtravel
at zero. Now spin the credit wheel
by
hand for the
maximum allowable number of credit.
The normally
closed switch in the stack must now be opened
by
the
pin
in
the
ratchet
wheel. This switch is the limit
switch
and.
opens
the lead to the
step up
solenoid.
d) If two
or more
credits
are
subtracted each
time
the
credit button is
actuated, the
spring
(SP-IOO-I10)
that posi·tions
the
escapement pawl
is too
strong.
Gently spread the turns
on
the spring until the
proper
action is obtained.
It is to be noted that selection
of
the #1, 2, 3,
or
4
pin hole will limit the maximum number
of
credits
possible
to 5, 10, 15
or 25, as desired.
This pin
actuates the limit switch
on
the switch stack.
5. Score
Drum Unit Adju§tment
(See Figure
111-4)
All sixteen score drum
unit
assemblies are essentially
the same. End of stroke switches are adjusted for a
1/32
11
gap and
.,010.
11
overtravel
(wipe) at the end of the
solenoid stroke. The switches in
the
stack are adjusted
likewise.
Note that if
the
solenoid plunger
;s actuated
by
hand, all switches
are open in
the
zero position, i.e.
the numeral
10'
in the viewing window on. the insert.
Malfunctions
can be corrected
by
proper adjustment.
Typical malfunctions
are:
a )
S
cor e d
rum
con
tin u est
0
s
t
e p t h r
0
ugh z'e rod
uri
n 9 the
reset
cycle
(top switch in switch assembly always
c
los
ed ) .
b)
Score
drum
does not
score (second Iswitch in switch
assembly always open).
c)
Score
drum
and
next higher drum
advance
simultaneously
on a continuous or intermittant
basis. This
is
proper
when advancing from the 9th
pOSition
to zero.
For
all
other numerical positions it indicates that
the
last
switch (closest to the metal frame) is always
or
intermittantly
closed.
o